Yes, you can use it instead of basic butter cake (actually, the texture is close to butter cake ^^).I once used it to make layer cake too "http://dailydelicious.blogspot.com/2010/11/happy-birthday-my-dearest-niece-iris.html"

Thanks pook! I guess since it contains half oil, would be softer than butter cake even if stored in the fridge right? The birthday cake Looks so good! Your niece is so lucky! ^^ do you think i could bake it straight in a round baking pan and cut into layers? I don't have such a big square baking pan.. May have go go and buy =O